Dimethyl glyoxime in a suitable solvent was refluxed for 10 minutes with pure pieces of nickel sheet, it will result in

1. Red precipitate

2. Blue precipitate

3. Yellow precipitate

4. No precipitate

While Fe³⁺ is stable, Mn³⁺ is not stable in acidic solution because

1. O₂ oxidises Mn²⁺ to Mn³⁺

2. O₂ oxidises both Mn⁺² to Mn⁺³ and Fe²⁺ to Fe³⁺

3. Fe³⁺ oxidises H₂O to O₂

4. Mn³⁺ oxidised H₂O to O₂

The incorrect statement about Re-Re bonding in [Re₂X₈]^2- is

(1) Re-Re bond length is abnormally short

(2) Re-Re bond is comprised of one $\mathrm{\sigma }, \mathrm{two} \mathrm{\pi } \mathrm{and} \mathrm{one} \mathrm{\delta } \mathrm{bond}$

(3) If Re-Re bond points along z-axis, then square planar ReX₄ unit will use s, p_x, p_y and d_x²-y² orbitals for the formation of four Re-X $\mathrm{\sigma }$ bonds

(4) d_xy orbitals will overlap to form $\mathrm{\delta }$-bond

Choose the correct statement regarding bonding in FeCl₃ at high temperature?

(I) It contains 2c-2e- bond

(II) It contains 3c-2e- bond

(III) It contains a co-ordinate bond

1. (I), (II)

2. (I), (III)

3. (II), (III)

4. (I), (II) & (III)

 Given lanthanoid ions ,the tendency to form the complexes is highest for:

1. Ce⁺³

2. Pm⁺²

3. Lu⁺³

4. Eu⁺²

Which of the following is the correct order of second ionization energy?

1. V > Cr > Mn

2. V < Cr < Mn

3. V < Cr > Mn

4. V > Cr < Mn

The inner transition element is not represented by the atomic
number among 59, 74, 95, 102, and 104.

1. 59

2. 95

3. 102

4. 104

A substance is found to have a magnetic moment of 3.9 B.M. The ion may be 

1. Fe⁺³

2. Mn⁺²

3. Co⁺²

4. Cu⁺²

Which of the following can not exist together in aqueous solution?

1. HgCl₂ and SnCl₂

2. HgCl₂ and SnCl₄

3. SnCl₄ and FeCl₃

4. SnCl₄ and PbCl₄

What is the n-factor ratio when KMnO₄ reacts with conc. HCl?

1. 3 : 4

2. 8 : 1

3. 16 : 1

4. 2 : 1